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How to read a chemical equation

How to read a chemical equation. 3 H 2 + N 2  2NH 3. Reactants : On the left side of the arrow. They form products. 3H 2 + N 2  2 NH 3. Products What the reaction produces On the right side of the arrow. 3 H 2 + N 2  2 NH 3. Coefficient Always precedes a formula

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How to read a chemical equation

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  1. How to read a chemical equation

  2. 3H2 + N2 2NH3 • Reactants: • On the left side of the arrow. • They form products

  3. 3H2 + N2 2NH3 • Products • What the reaction produces • On the right side of the arrow

  4. 3H2 + N2 2NH3 • Coefficient • Always precedes a formula • How many units of what it precedes. For example, 3 hydrogen molecules, 1 nitrogen molecule, 2 ammonia molecules. • No coefficient means 1 • This is the number you change when balancing

  5. 3H2 + N2 2NH3 • Subscript • Part of the formula • NEVER change it

  6. 3H2 + N2 2NH3 • Arrow • Yields • Produces • NEVER means equals

  7. 3H2 (g) + N2 (g) 2NH3(g) • Phase indicators • (aq): aqueous: dissolved in water • (g): gas: if this is on the product side and (aq) or (l) is on the reactant side, you will see bubbles • (l): liquid: note this is different from (aq) • (s): solid: if this is on the product side, you will produce a precipitate.

  8. Example NaCl(aq): means sodium chloride dissolved in water NaCl(l): means molten sodium chloride

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